42. Merge the layers by choosing Layer > Merge Linked. Your layers palette
should look like the next graphic.

You have separated the image into three channels, one for each of the primary light
components: red, green, and blue. These components can be looked at as a source for making
conversion to black-and-white, as well as a source for learning about the nature of light
and RGB theory. These are exactly the same components you would get using the Channels
palette in Photoshop. Save this image by a different name so you can find it later.

Take a moment to examine the layers representing the separate light components by viewing
them individually. Note the qualitative differences between the red, green, and blue
channels. The representations reveal specific qualities about light in each spectrum.

Figure 2.1
These images were
created using the
separation steps in
the previous procedure.
Note that the
green looks the most
like what you might
expect as a grayscale
conversion.

Figure 2.1 shows an image of an orange flower against a green background separated
into its components. (See the color representation of this flower in the color section).

Now that you have seen the separation, you can accomplish the same set of 42 steps in a
single click. Just go to the Hidden Power tools on the Styles and Effects palette, open any
RGB image, and click the Split RGB in the PowerSeparations category of Effects. This will
execute the steps for you. Splitting RGB should be done on a flattened RGB imageÂresults
with images that are not flattened may be somewhat unpredictable and can generate errors.

If you haven't installed the Hidden Power tools, you can find the tools on the CD and instructions
for installing them in the Introduction to this book (see "The Hidden Power Tools" in the
Introduction). Supplementary information on installing and troubleshooting can be found
on the hiddenelements.com website and the Hidden Power of Photoshop Elements forums
at retouchpro.com.

Separation is a key concept for grasping everything that follows in the bookÂit isn't
just a neat parlor trick. It is a lossless process based on light theoryÂlossless in that it
won't do any damage to your images. If you can navigate the steps but don't really understand
what each is doing, deeper understanding will come, either as you proceed through
the book or as you repeat the exercise and learn the process.